Periodic limb movement disorder (PLMD) is a condition characterized by twitching, flexing, and jerking movements of the legs and arms during sleep. It’s sometimes referred to as periodic leg movement ...

Periodic limb movements of sleep (PLMS) is a sleep disorder that involves repetitive and involuntary movements of the limbs. Periodic limb movements occur when the arms or legs move during sleep. In ...

July 20, 2007 — Researchers have identified the first gene variant associated with susceptibility to periodic limb movements in sleep, involuntary movements that are present in most patients with ...